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H. LINDLEY. O APPARATUS FOR CONTROLLING THE CIRCULATION 0P LIQUID THROUGH CYLINDER JACKETS 0F OAS OR OTHER MOTORS. NO. 460,771. Patented Apr. 21, 1891.

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(No Model.) s Sheets-Sheet 2. H. LINDLEY. APPARATUS FOR CONTROLLING THE CIRCULATION OF LIQUID THROUGH CYLINDER JACKETS OF GAS OR OTHER MOTURS.

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Patented Apr. 21, 1-891.

UNrrnn STATES PATENT OFFICE.

HERBERT LINDLEY, OF SALFORD, ENGLAND.

APPARATUS FOR CONTROLLING THE CIRCULATION F LIOUID THROUGH CYLINDER-JACKETS OF GAS OR OTHER MOTORS.

SSPEGIFIOATION forming part of Letters Patent No. 450,771, dated April 21, 1891.

Application filed August 25,1890. Serial No. 363,014- (No model.) Patented in England December 12, 1889,110. 20,033; in Norway September 1,1890, No, 1,924; in South Australia September 19, 1890, No. 1,721 in New Zealand September 26, 1890, No. 4,617; in Italy 8epte1nber 30, 1890, LV. 244:: in Cape of Good Hope October 1, 1890,110. 633; in Natal October 1, 1890; in Transvaal October 1890, 1 212; in Brazil October 24, 1890, No. 981; in Spain November 14, 1890, No. 11,204, and in Argentine Republic December 2 9, 1890, No. 975

To all whom it may concern:

Be it known that I, HERBERT LINDLEY, a subject of the Queen of Great Britain and Ireland, residing at Salford, in the county of 5 Lancaster, Kingdom of Great Britain and Ireland, have invented Apparatus for Controlling the Circulation of Liquid through the Cylinder-Jackets of Gas or other Motors, (for which I have obtained Letters Patent in Eng- [0 land December 12, 1889, No. 20,033; in Norway September 1, 1890, No. 1,924; in South Australia September 19, 1890, No. 1,721; in New Zealand September 26, 1890, No. 4,617; in Italy September 30, 1890, LV, 214:; in Cape of Good Hope October 1, 1890, No. 633; in

Natal October 1, 1890; in Transvaal October, 1890,No. 212; in Brazil October 24,1890, No. 981; in Spain November 11, 1890, No. 11,204, and in Argentine Republic December 29, 1890, No. 975,) of which the following is a specification.

In certain types of hoat-engincsas, for example, gas and liquid-hydrocarbon motorsit is usual to provide the motor-cylinders with 2 5 jackets, through which fluid-for example, wa-

teris caused to circulate for the purpose of preventing the overheating of the cylinders.

In order to automatically control the water circulation in a heat-engine of the kind mentioned, so that the cylinder of such an engine may not be too hot when working at full load nor so cold when working at light loads as to condense the vapor drawn in, I make the circulation of water in the jacket surrounding 5 such cylinders dependent on or proportional to the amount of work being done by the engine. To this end a throttle-valvc is arranged in the entering or delivery pipe that conducts the coolingwater to or from the jacket, and

this valve is automatically controlled or opcrated by a thermostat. This thermostat may conveniently consist of a twisted or bent coil or merely of a straight bar, such coil or bar being composed of two different metals and 5 so arranged as to be subject to the heat of the motor-cylinder, so that when the temperature in the cylinder becomes too high such coil or bar will bond or twist and will impart motion to the valve and tend to open the same and allow a more rapid circulation, the rc- 5o verse action taking place when the cylinder gets too cold or tends to do so. The thermostat may consist of a metal thermometer depending for its action on the unequal expansionof two 1netalssuch,for example, as zinc and brass-or of a curved tubesuch as a Bourdon gage-tubefillcd with spirit or other suitable liquid. The thermostat may be placed in the water-delivery pipe or in'the water-jacket of the cylinder or in contact with the exterior hot wall of the jacket.

In theaccompanyingdrawings, Figures 1 and 2 are sections at right angles to each other of one form of such a thermostat incloscd witl1- in a casing or chamber adapted to be placed in communication with the water-jacket of the cylinder by the branch and a rising main. Fig. 3 is a part of a motor-cylinder having a water-jacket and thermostat according to this invention.

The thermo-sensitive device in this case is shown as a Bourdon tube l, that is filled with spirits of wine and inclosed in a casing or chamber 2, that is in communication by the branch 3 and delivery-pipe or rising main with the water-jacket 5 of a motor-cylinder G. The tube is fixed at one end and connected at the other end to an equilibrium-valve 7 by a three-armed lever Sin such a manner as to move said valve clrdwise in its case 9 and open it when the temperature of the water in the casing 2 rises too high and close it when the temperature falls too low. To enable the valve 7 to be moved externally by hand, there is provided a hand-levenlO, fixed 8 upon a spindle 11, that fits in a bush or gland in the side of the casing 2, and is provided with a cam 12 on its inner end, that acts against one arm of the lever 8 when the handlever is operated. 0

As will be obvious, other devices depending for their action on the heat imparted by the explosion in the cylinder to the water in the casing or jacket surrounding the same may be utilized to operate the throttle-valve.

hat I claim is- 1. In combination, the water-jacket of the cylinder, a passage into said jacket, a valve in said passage controlling the passage of Water through the same, and a thermostat controlling the movement of said valve and located in contact with the water or the cylinder to open the valve when the heat is above a certain point and tend to close the valve when the heat falls.

2. In combination, a thermostat located in the water-passage to or from the coolingjacket of the cylinder, a valve in said passage, and means controlled by said thermostat to open the valve when the heat rises and which tend to close the same when the heat falls.

3. In a gas or other motor of the kind herein referred to, the combination, with a motorcylinder provided with a jacket, of a valve for controlling the circulation of liquid through said jacket, a conduit in communication with said jacket and through which liquid after being heated by said cylinder flows, and a thermostat located in said conduit, subject to the heat of said liquid, and capable of automatically operating said valve, substantially as herein described, for the purpose set forth.

4. In a gas or other motor of the kind herein referred to, the combination,with amotorcylinder having a water-jacket provided with inlet and delivery pipes, of a valve for controlling the flow of liquid through said jacket, and a thermostat consisting of a curved tube, such as a Bourdon gage-tube, connected with said valve and arranged to be immersed in liquid that has been in contact with said cylinder, substantially as herein described, for the purpose set forth.

5. In a gas or other motor of the kind referred to, the combination, with a motor-cylinder having a water-jacket, of a valve located in the delivery-pipe of said jacket, a thermostat, also located in said delivery-pipe and consisting of a curved tube 1, filled with liq uid and fixed at one end, and a lever arranged to transmit motion from said tube to said valve, substantially as herein described.

6. In a gas or other motor of the kind here in referred to, the combination, with a motorcylinder havinga water-jacket and a valve for controlling the circulation of water through said jacket, of a curved tube 1,10eated in the delivery-pipe of said jacket and fixed at one end, a lever 8, connected to said tube and adapted to operate said valve, and means, comprising a hand-lever 10, arranged externally to said delivery-pipe, a spindle 11, connected to said hand-lever, and a cam 12, carried by said spindle and arrangedto act against said lever 8, substantially as herein described, for the purpose specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HERBERT LINDLEY.

Witnesses:

S. B. BOARDLEY, FRED. A. CLIFFE, Both Clerks, Sandon Works, Salford. 

